Tuff question also child what age we referring to?  
And I pray I won't have to deal with this.  I'm just ask them does it feel right or wrong.  And point out the bozo shit after that they on that own. I don't think people actually have a problem with being gay i think it's more don't have to wave a flag letting everyone know you suck dick.  Or put your sexual preference on younger impressionable minds.   

 Should we let kids see people kissing in movies, like in the classic Disney princess movies? 👀 cuz that puts sexual preference out there for kids to see in a sense